class Circle {
  constructor(r){
    this.#radius = r;
}
get area(){
  return Math.PI *  this.#radius * this.#radius;
}
get circumference(){
  return 2 * Math.PI * this.#radius;

}
get diameter(){
  return 2* this.#radius;
}
#radius = 0;
}
module.exports =Circle;
